Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c235db4bb6e492…

MALICIOUS

PDF

44.5 KB Created: 2020-10-25 09:23:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: cc96544fee049f212493a08fa3c60182 SHA-1: e2f126966aaa1a3dbb14691482b292870b06f4f1 SHA-256: 09c235db4bb6e492b5cb4731e68e54bb3fe43adf66238c7b202c4632bf664aed
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for malicious redirector links, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches the one identified by the heuristic. This suggests the PDF is designed to trick users into visiting a malicious website under the guise of downloading a book.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/123?keyword=cognitive+psychology+book+by+solso+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/0218/0006/files/23010970170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2446/5051/files/wudafisiwobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0194/8577/files/60585263039.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/82934051155.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/authenticity_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/fidoni.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/andhra_university_m_pharmacy_syllabus_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/54838907746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/5107/9592/files/41139142125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8504/4152/files/58904212078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/3218/8357/files/manual_clothes_wringer_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/susikubaganujusibidaden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7528/0552/files/tajulusiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3778/6266/files/petsmart_bark_collar_with_remote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1530/2043/files/tesco_creamy_camembert_cooking_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54edcb79-c93a-403a-aed7-df008b7a4243/71835577260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6f38ef3-8a85-409c-998a-1508db8f4bac/13260770757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/834e692f-3de5-44e6-b205-556f2cf799ad/kopitumiwudexuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19888544-58c3-45f3-b00b-b271c05f7f71/25595318467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91a6a2b5-9d7a-4660-a838-016b561154f0/lizozuwitedanos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7fc9ab9-8692-4407-92c9-69ba28b32496/all_i_want_for_christmas_is_you_pian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33d17c9b-837d-4447-821f-79e3bcde91cd/67562785329.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5173d11f-581b-4ca6-b0d2-89538213cd16/18823060125.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8A 5380 bytes
SHA-256: f92d42575252e56c9d5df32237277cc6c3425cf429ec6165d1e9a4a711e15b5a
font_01_sfnt_off00007ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE9 11036 bytes
SHA-256: ffcd0a35291cd235fd75cfd1f33bac40157fa46eeb108eb8215fbf25a16a9ed2

Open this report in the interactive analyzer, or submit your own file for analysis.